土耳其地震序列的近断层脉冲型地震动识别与特征分析

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摘要 2023年2月土耳其东安纳托利亚断裂带连续发生多次6级以上强震，为揭示此次强震序列中的近断层地震动特征，选取土耳其Mw7.8、Mw7.5、Mw6.7和Mw6.3的四次地震中的781组强震记录，基于能量法识别获得45条水平向脉冲型地震动记录和17条竖向脉冲型地震动记录，其中水平向75%的脉冲型地震动来自于Mw7.8地震。通过分析识别的速度脉冲记录表明，存在相同台站竖向为脉冲型地震动而水平向为非脉冲型地震动的现象；土耳其地震序列的速度脉冲具有周期短、幅值大的显著特点，其中8002台站记录的最大脉冲周期达到7.57 s、3138台站记录的最大脉冲幅值达到231.30 cm/s。通过分析矩震级对脉冲周期的影响和脉冲幅值随矩震级和断层距的变化规律表明，水平向速度脉冲周期随矩震级呈对数线性增大，在相同矩震级情况下脉冲周期明显小于已有模型的预测值；脉冲幅值随断层距的增加存在明显衰减的趋势，当断层距小于25 km时，脉冲幅值普遍高于已有预测模型。研究结果表明土耳其地震序列产生了大量的近断层脉冲型地震动，识别结果丰富了全球近断层脉冲型地震动数据库，揭示的特征可为震害分析和脉冲模型建立提供参考。

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	丁龙兵1
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	胡进军1
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	李培旭1
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	刘名吉1
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关键词 ：土耳其地震序列, 脉冲型地震动, 脉冲识别, 脉冲周期, 脉冲幅值

Abstract：Multiple strong earthquakes of magnitude greater than 6 occurred in February 2023 in the East Anatolian Fault Zone, Turkey. To reveal the characteristics of near-fault ground motion in the 2023 Turkey earthquake sequence, 781 strong earthquake records from Mw7.8, Mw7.5, Mw6.7 and Mw6.3 earthquakes in Turkey were selected. 45 horizontal and 17 vertical pulse-like ground motion records were obtained based on the energy method. 75% of the horizontal pulse-like ground motion records were obtained from the Mw7.8 earthquake. Through the analysis of the velocity pulse records, the station record which can be identified as pulse-like in the vertical component may not be identified as pulse-like in the horizontal component. The velocity pulses of Turkey earthquake sequence have the characteristics of short period and large amplitude, the maximum pulse period is 7.57 s recorded from station 8002 and the maximum pulse amplitude is 231.30 cm/s recorded from station 3138. Through analyzing the effect of moment magnitude on pulse period and the variation of pulse amplitude with moment magnitude and rupture distance, the horizontal velocity pulse period increases logarithmically linearly with moment magnitude, and the pulse period is obviously smaller than the predicted value of the previous models under the same moment magnitude. The amplitude of the pulse decreases obviously with the increase of the rupture distance. When the rupture distance is less than 25 km, the amplitude of the pulse is generally greater than the previous models. The results show that a large number of near-fault pulse ground motion is occurred in Turkey earthquake sequence. The pulse-like identification results enrich the global near-fault pulse-like ground motion database, and the characteristics revealed provide a reference for engineering damage analysis and pulse model establishment.

Key words： Turkey earthquake sequence Pulse-like ground motion Pulse identification； Pulse period Pulse amplitude

收稿日期: 2023-03-06 出版日期: 2023-12-15

引用本文:

丁龙兵1，2，胡进军1，2，李培旭1，2，刘名吉1，2. 土耳其地震序列的近断层脉冲型地震动识别与特征分析[J]. 振动与冲击, 2023, 42(23): 71-79.
DING Longbing1,2,HU Jinjun1,2,LI Peixu1,2,LIU Mingji1,2. Identification and characterization of pulse-like ground motion in the Turkey earthquake sequence. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(23): 71-79.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I23/71

[1] Saman Yaghmaei-Sabegh. Detection of pulse-like ground motion based on continues wavelet transform[J]. Journal of seismology, 2010, 14: 715-726.
[2] Luco N, Cornell CA. Structure-Specific Scalar Intensity Measures for Near-Source and Ordinary Earthquake Ground Motions[J]. Earthquake Spectra, 2007, 23(2): 357-392.
[3] Sinan Akkar, Ufuk Yazgan, Polat Gülkan. Drift estimates in frame buildings subjected to near-fault ground motion[J]. Journal of Structural Engineering, 2005, 131(7): 1014-1024.
[4] Paul G. Somerville, Nancy F. Smith, Robert W. Graves, et al. Modification of Empirical Strong Ground Motion Attenuation Relations to Include the Amplitude and Duration Effects of Rupture Directivity[J]. Seismological Research Letters, 1997, 68(1): 199-222.
[5] Bor-Shouh Huang,Kou-Cheng Chen, Win-Gee Huang, et al. Characteristics of strong ground motion across a thrust fault tip from the September 21, 1999, Chi-Chi, Taiwan earthquake[J]. Geophysical Research Letters, 2000, 27(17): 2729-2732.
[6] 张凡, 李帅, 颜晓伟, 等. 近断层脉冲型地震动作用下大跨斜拉桥地震响应分析[J]. 振动与冲击, 2017, 36(21): 163-172.
ZHANG Fan, LI Shuai, YAN Xiaowei, et al. Effects of near-fault pulse-type ground motions on long-span cable-stayed bridge[J]. Journal of Vibration and Shock, 2017, 36(21): 163-172.
[7] Sehhati R, Rodriguez-Marek A, ElGawady M, et al. Effects of Near-Fault Ground Motions and Equivalent Pulses on Multi-Story Structures[J]. Engineering Structures, 2011, 33(3): 767-779.
[8] 谢俊举, 李小军, 温增平. 近断层速度大脉冲对反应谱的放大作用[J]. 工程力学, 2017, 34(08): 194-211.
XIE Junju, LI Xiaojun, WEN Zengping. The Amplification Effects of Near-fault Distinct Velocity Pulses on Response Spectra[J]. Engineering Mechanics, 2017, 34(8): 194-211.
[9] 赵晓芬, 温增平, 谢俊举, 等. 考虑近断层方向性效应的速度脉冲放大作用预测模型[J]. 振动与冲击, 2023, 42(8): 305-318.
ZHAO Xiaofen, WEN Zengping, XIE Junju, et al. An empirical approach of accounting for the pulse amplification effects induced by near-fault directivity[J]. Journal of Vibration and Shock, 2023, 42(8): 305-318.
[10] Paul G.Somerville. Magnitude scaling of the near fault rupture directivity pulse[J]. Physics of the Earth and Planetary Interiors, 2003, 137(1-4): 201-212.
[11] Yang Dixiong, Zhang Changgeng. Fractal characterization and frequency properties of near-fault ground motions[J]. Earthquake Engineering and Engineering Vibration, 2013, 12(4): 503-518.
[12] 江辉, 李新乐, 窦慧娟, 等. 近断层长周期脉冲型地震动对竖向反应谱影响研究[J].
振动与冲击, 2012, 31(16): 56-61.
JIANG Hui, LI Xinle, DOU Huijuan, et al. Influence on Vertical Response Spectra of Near-fault Long-period Pulse-type Earthquake Ground Motions[J]. Journal of Vibration and Shock, 2012, 31(16): 56-61.
[13] Changhai Zhai, Cuihua Li, Sashi Kunnath, et al. An efficient algorithm for identifying pulse-like ground motion based on significant velocity half-cycles[J]. Earthquake Engineering Structural Dynamics, 2018, 47(3): 757-771.
[14] Jack W. Baker. Quantitative Classification of Near-Fault Ground Motions Using Wavelet Analysis[J]. Bulletin of the Seismological Society of America, 2007, 97(5): 1486-1501.
[15] Shrey K. Shahi, Jack W. Baker. An Efficient Algorithm to Identify Strong-Velocity Pulses in Multicomponent Ground Motions[J]. Bulletin of the Seismological Society of America, 2014, 104(5): 2456-2466.
[16] Changhai Zhai, Zhiwang Chang, Shuang Li, et al. Quantitative Identification of Near-Fault Pulse-Like Ground Motions Based on Energy[J]. Bulletin of the Seismological Society of America, 2013, 103(5): 2591-2603.
[17] Xiaoyu Chen, Dongsheng Wang, Rui Zhang. Identification of Pulse Periods in Near-Fault Ground Motions Using the HHT Method[J]. Bulletin of the Seismological Society of America, 2019, 109(6): 2384-2398.
[18] David M. Boore, Orientation-Independent. Nongeometric-Mean Measures of Seismic Intensity from Two Horizontal Components of Motion[J]. Bulletin of the Seismological Society of America, 2010, 100(4): 1830-1835.
[19] David M. Boore, Julian J. Bommer. Processing of strong-motion accelerograms: needs, options and consequences[J]. Soil Dynamics and Earthquake Engineering, 2005, 25(2): 93-115.
[20] David M. Boore, Christopher D. Stephens, William B. Joyner. Comments on Baseline Correction of Digital Strong-Motion Data: Examples from the 1999 Hector Mine, California, Earthquake[J]. Bulletin of the Seismological Society of America, 2002, 92(4): 1543-1560.
[21] David M. Boore; Orientation-Independent. Nongeometric-Mean Measures of Seismic Intensity from Two Horizontal Components of Motion[J]. Bulletin of the Seismological Society of America, 2010, 100(4): 1830-1835.
[22] Cuihua Li, Zhanxuan Zuo, Sashi Kunnath, et al. Orientation of the strongest velocity pulses and the maximum structural response to pulse-like ground motions[J]. Soil Dynamics and Earthquake Engineering, 2020, 136: 106240.
[23] Cork, Timothy G. et al. Effects of tectonic regime and soil conditions on the pulse period of near-fault ground motions[J]. Soil Dynamics and Earthquake Engineering, 2016, 80: 102-118.
[24] Alavi B, Krawinkler H. Behavior of Moment-Resisting Frame Structures Subjected to Near-Fault Ground Motion[J]. Earthquake Engineering and Structural Dynamics, 2004, 33: 687-706.
[25] 常志旺,翟长海,李爽等. 近场地震动速度脉冲周期的确定[J]. 土木工程学报, 2013, 46(S2): 130-134.
CHANG Zhiwang, ZHAI Changhai, LI Shuang, et al. Determination of the pulse period for near-fault pulse-like ground motions[J]. China Civil Engineering Journal, 2013, 46(S2): 130-134.
[26] Mavroeidis G P, Papageorgiou A S. A Mathematical Representation of Near-fault Ground Motions[J]. Bulletin of the Seismological Society of America, 2003, 93(3): 1099-1131.
[27] 李明, 谢礼立, 翟长海. 近断层脉冲型地震动重要参数的识别方法[J].
世界地震工程, 2009, (04): 001-6.
LI Ming, XIE Lili, ZHAI Changhai. Identification methods of important parameters for near-fault pulse-type ground motions[J]. World Earthquake Engineering, 2009, (04): 1-6.
[28] Bray J D, Rodriguez-Marek A. Characterization of forward-directivity ground motions in the near-fault region[J]. Soil Dynamics and Earthquake Engineering, 2004, 24(11): 815-828
[29] 赵国臣, 徐龙军, 谢礼立. 基于多尺度分析方法的近断层地震动特性分析[J].
地球物理学报, 2013, 56(12): 4153-4163
ZHAO Guocheng, XU Longjun, XIE Lili. On near-fault ground motion characteristics through multi-scale method[J]. Chinese Journal of Geophysics, 2013, 56(12): 4153-4163.
[30] National Earthquake Hazards Reduction Program. Recommended Provisions for Seismic Regulations for New Buildings and Other Structures (2015 edition)[S]. Washington D C: Building Seismic Safety Council: 14.
[31] Chin-Hsiung Loh, Tsu-Chiu Wu, Norden E. Huang. Application of the Empirical Mode Decomposition-Hilbert Spectrum Method to Identify Near-Fault Ground-Motion Characteristics and Structural Responses[J]. Bulletin of the Seismological Society of America, 2001; 91(5): 1339-1357.
[32] Tang Y, Zhang J. Response spectrum-oriented pulse identification and magnitude scaling of forward directivity pulses in near-fault ground motions[J]. Soil Dynamics and Earthquake Engineering, 2011, 31(1): 59-76.
[33] Timothy G. Cork, Jung Han Kim, George P. Mavroeidis, et al. Effects of tectonic regime and soil conditions on the pulse period of near-fault ground motions[J]. Soil Dynamics and Earthquake Engineering, 2016, 80: 102-118.
[34] Chen X Y, Wang D S. Multi-pulse characteristics of near-fault ground motions[J]. Soil Dynamics and Earthquake Engineering, 2020, 137: 106275.